So here’s the trivia answers – I waited until today for late entries.
It was hard to decide because nobody said “highway x in state y” for all three. But Marciepooh had the most specific answers and did have something for all 3. Send me an e-mail and we’ll work out a way for you to get the tchochke.
What was I thinking of?
I did a lot of driving around the east coast, as you would guess from my profile. So that’s where I was thinking of.
1. I-84 in the southwest corner of Connecticut (gotta catch those New Yawkers)
2. I-81 in northern Pennsylvania (ditto)
3. I-95 south of Boston, in Massachusetts (incidentally, as a rule, try to avoid I-95. As the spine of the northeast corridor megapolis, it has horrific traffic jams pretty much along its entire northern portion.)
Of course, the east coast doesn't have a monopoly on bad road engineering, as you've shown in the comments. And we haven't even started on secondary roads, which can be mind-boggling...